An integrity management strategy has been developed for pipelines carrying gas, condensate/oil and water. The strategy is based on identification of corrosion related failure modes, risk assessment, and application of risk reducing methods in terms of corrosion control,
monitoring and inspection. Modeling of multiphase flow, CO2 corrosion and associated probability distributions along the pipeline play key roles in the risk assessment. Examples of applications are presented.
Key words: C-Mn steel, oil and gas production, pipelines, CO2, corrosion model, limit state design, integrity management.